Check the listing for details. Amazon Echo Dot (4th Gen.) Smart Speaker - Charcoal. Color: Black, Condition: Used, Made in China. Listed at 20.00 USD. The Amazon Echo Dot (4th Gen.) Smart Speaker in Charcoal is a versatile and powerful smart speaker that offers a wide range of features and capabilities. With a sleek sphere shape and a compact size, this speaker is perfect for any room in your home. It is compatible with all universal devices and models, and comes with a subwoofer for enhanced surround sound experience. The smart speaker is powered by Alexa, allowing you to easily control your smart home devices and play music with just your voice commands. Additionally, it features Bluetooth and WiFi connectivity, along with voice search capabilities, making it a convenient and user-friendly addition to your technology setup. Untested- it turns on but I do not know how to set it up.